Novapoint Terrain Library

Use this function to convert selected circles and 2D polylines with arcs (source objects) to a series of straight lines (more break points) and drawn as 3D polylines.

• The line segments of the source objects will be unaltered (no additional break points)

This function is also available from Novapoint tools and the modules Road, Railway, and Civil Construction

MOUS_ICO Menu: Terrain > Terrain Design > Convert Arc to Straight Lines…

Command prompts:

Select 2D Polyline:

MOUS_ICO Pick all the source objects (circles and polylines) and confim the selection

The dialog 'Convert Arc to Straight Lines' will pop up.

AC Distance determines the accuracy (number of straight lines, break points, and the curvature of a 3D polyline) with that of the arcs/circles in the source objects.

• The smaller values, the better the 3D polyline follows the arcs/circles of the source object.
• This means that it will be having more number of straight-lines and break points
• Refer the preview of the dialog for illustration
• Define a numeric value (metre).

Use these options to define the elevation of the converted 3D polyline

• Use Original Elevation - The elevation of the converted 3D polylines will be the same as that of the source objects
• Use Current System Elevation - The elevation setting (CAD command 'Elevation') of the drawing will be read and assigned to the converted 3D polylines
• Set Elevation to - Key in desired elevation (in metre) at this edit field to define the elevation of the converted 3D polyline
• Use Elevation from DTM - The elevation setting in the DTM-line object will be used to define the elevation of the converted 3D polyline.

Use this option to inherit the CAD properties of the source object to the converted 3D polyline

Use this option to delete the source objects

Execute the function with OK / Draw

Related Topics

• create_3d line (see 'Lines Only')
• Straight lines only